Perfect score

Aspiring PI Jolene Kelley is skipping class at her fancy new private school, North Shore Prep, when she witnesses her beloved guidance counselor fall in front of an oncoming L train. The police call Mr. Medina's death a tragic accident, but Jo knows what she saw: This was murder. With help from her friends Sabrina and Frankie -- and the inside scoop from her public-defender parents and her mentor at the state attorney's office -- Jo opens up her own investigation into Mr. Medina's death. Jo's investigation uncovers a scandal brewing at North Shore Prep. Mr. Medina had found out about it, and now he's dead. Jo has a slew of suspects, including administrators, students, parents, and even local politicians. Can she figure out which one is the killer before she becomes their next victim?.